providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/SwitchDataCollector.java

/*
 * Copyright 2016-present Open Networking Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.onosproject.provider.of.flow.impl;

/**
 * Auxiliary abstraction.
 */
interface SwitchDataCollector {

    /**
     * Starts the collector.
     */
    void start();

    /**
     * Stops the collector.
     */
    void stop();

    /**
     * Signals reply has been received.
     */
    default void received() {

    }

    /**
     * Records the number of events seen.
     *
     * @param events number of events
     */
    default void recordEvents(int events) {

    }

    /**
     * Resets the number of events seen.
     */
    default void resetEvents() {

    }
}